added missing return in inf.bound() on python side
renamed files in python wrapper
renamed files in python wrapper
initial docstring and doctest for python  opengm.FactorSubset
initial docstring and doctest for python  opengm.FactorSubset
fixed wrong import in python
Merge remote-tracking branch 'upstream/RC2.1' into RC2.1
fixed compile bugs which where detected by clang++ but not gcc
fixed compile bugs which where detected by clang++ but not gcc
fixed compile bugs which where detected by clang++ but not gcc
removed useless instructions
added missing return in pyMovemaker::valueAfterMove
JOERG PLS CHECK THIS!!!! fixed bug in dualDecomposition  where assigment (=) has been confused with compare operator (==)
removed useless assert
fixed warning
added virtual destructor to blackboxtester
added maxflow ibfs to python graphcut
fixed minor bug in operation/accumulation
removed warnings from python code
removed most annoying warnings